{"id":3367116,"url":"https://alion.io/job/egis-group-senior-tunnel-ventilation-engineer-design","title":"Senior Tunnel Ventilation Engineer (Design)","company":{"id":3472,"name":"Egis Group","domain":"egis-group.com","url":"https://alion.io/company/egis-group","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"SmartRecruiters","truth_index":{"grade":"B","score":77,"open_postings":147,"ghost_share":0,"stale_share":0.932,"repost_share":0,"time_to_fill_p50_days":48,"computed_at":"2026-11-02T06:13:15Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Cairo, Egypt"],"countries":["EG"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":14000,"max_usd":32000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":8444},"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"ANSYS","optional":false}],"status":"live","first_seen_at":"2026-10-27T06:44:44Z","employer_posted_date":"2026-10-27","last_verified_at":"2026-11-02T12:03:51Z","board_verified":true,"closed_at":null,"days_open":6,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":6},"description":"Egis is an international player active in architecture, consulting, construction engineering and mobility services. We create and operate intelligent infrastructures and buildings that respond to the climate emergency and contribute to more balanced, sustainable and resilient territorial development. Operating in 100 countries, Egis puts the expertise of its 19,500 employees at the service of its clients and develops cutting-edge innovations accessible to all projects. Through its wide range of activities, Egis is a key player in the collective organisation of society and the living environment of citizens all over the world.\nWith 3,500 employees across 8 countries in the Middle East, Egis has delivered over 700 complex development projects, stimulating economic growth and enhancing quality of life. Ranked among the top ten firms in the Middle East by Engineering News Record (ENR), Egis is committed to sustainable development. The Group’s operations in the Middle East are built on strategic acquisitions and a deep understanding of local market conditions. Egis has long history of providing comprehensive engineering, consulting, and project management services makes it a trusted partner for regional governments, investors, and developers.\n As an accomplished Sr. Tunnel Ventilation Engineer, you will be responsible for leading the tunnel ventilation system (TVS) design, 1-D and 3-D simulation analysis, fire life safety studies and associated HVAC design for Metro, High-Speed Rail, Road Tunnel and major infrastructure projects, ensuring compliance with international standards and UAE / KSA local authority regulations.\nThe candidate is expected to stay updated on industry trends, new technologies and best practices, and to be proficient in 1-D (IDA Tunnel / SES) and 3-D CFD (FDS / PyroSim, ANSYS) simulation software and HVAC load calculation tools (HAP). A minimum of 10 years of experience in the relevant field is preferred.\nDesign & Analysis:\nIn-depth knowledge of tunnel ventilation system (TVS) design principles and requirements with respect to international codes and standards for metro, high-speed rail and road tunnel projects.\nPerform 1-D simulation analysis (IDA Tunnel / SES) for normal, congestion and emergency/fire scenarios, including pressure transient analysis, for underground stations, running tunnels and escape/cross-passage arrangements.\nCarry out 3-D CFD smoke and fire modelling (FDS / PyroSim, ANSYS) to assess smoke movement, back-layering, evacuation tenability and tunnel-station integration, ensuring compliance with NFPA 130 / NFPA 502.\nPrepare tunnel ventilation design calculations, including fresh-air requirements for pollutant dilution in road tunnels (CO, NOx, opacity), jet-fan sizing based on critical velocity, and fan selection and duty-point checks for tunnel and station ventilation systems.\nDevelop ventilation strategies and mode of operation tables based on tunnel geometry, gradient, airflow requirements and emergency response criteria; prepare operational write-ups and cause-and-effect inputs.\nCarry out HVAC heat load calculations (HAP) for underground station public areas, technical rooms and utility buildings, and validate equipment sizing, duct pressure drop, external static pressure and pump head requirements.\nDesign and lay out fan rooms, plant rooms, shafts, dampers and mechanical rooms for tunnel and transit ventilation systems, including space-proofing and 3D model input.\nPrepare and review design documents such as the Basis of Design (BOD), calculation reports, technical specifications, datasheets, equipment lists and layout drawings.\nDeliver design and engineering within project timelines while adhering to maintenance, safety and quality standards, considering constructability, economics and operability at each project stage, including value engineering and optimization.\nIn-depth knowledge of applicable codes and standards, including NFPA 130, NFPA 502, PIARC, TSI, ASHRAE, UAE Fire and Life Safety Code, SBC and BS/EN, as relevant to tunnel ventilation and fire life safety.\nExperience working on EPC / Design & Build projects, including tendering, BOQ preparation, preparation of Material Requisitions (MR) and Technical Bid Evaluations (TBE), and review of vendor submittals, datasheets and proposals for technical and contractual compliance.\nWorking knowledge of installation, testing and commissioning of tunnel ventilation systems, and support to construction teams, including resolution of TQs / RFIs.\nParticipate in design reviews, HAZID, constructability reviews and 3D / BIM model reviews.\nEnsure all designs comply with relevant building codes, safety regulations and environmental standards.\nAble to work on and support multiple projects simultaneously.\nDesign Collaboration:\nLead TVS and fire life safety design independently, and guide, mentor and support a team of junior engineers and BIM modellers.\nInteract with clients, consultants and authorities to understand their requirements, present ventilation design proposals, and provide technical support and recommendations.\nCollaborate with Civil, Architecture, Structure, Electrical, Fire Protection, Signalling, Instrumentation & Controls and other MEP disciplines to achieve a coordinated design and resolve interdisciplinary clashes.\nCollaborate with the BIM team to prepare 3D models and 2D layouts of tunnel ventilation plant, shafts and stations using Revit MEP, Navisworks and BIM 360.\nMaintain accurate records of all design documents, simulation models, calculations, review comments and correspondence.\n Bachelor’s degree in Mechanical Engineering or a related discipline. A Master’s degree in a relevant field is an advantage.\nMinimum 10 years of relevant experience in tunnel ventilation and fire life safety design, with demonstrated experience on metro, rail and/or road tunnel projects.\nIn-depth knowledge of TVS design principles and applicable codes and standards, including NFPA 130, NFPA 502, PIARC, EU Technical Specifications for Interoperability (SRT TSI), ASHRAE, UAE Fire and Life Safety Code of Practice, Saudi Building Code (SBC 801) and relevant BS / EN standards.\nProficiency in IDA Tunnel and/or SES, FDS / PyroSim, ANSYS Fluent / CFX and Carrier HAP. Familiarity with evacuation modelling tools (e.g., Pathfinder, STEPS) is an advantage.\nRegistration with the UAE Society of Engineers or the Saudi Council of Engineers (or eligibility to register). Chartered status (e.g., CEng) is preferred.\nExperience on GCC infrastructure projects is highly desirable.\nStrong communication, presentation and leadership skills.","description_format":"text","description_chars":6616,"description_truncated":false,"requirements":{"experience_years_min":10,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[{"language":"English","level":"All levels","optional":false}]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Transport Infrastructure","Civil & Structural Engineering","Engineering Services"],"lifecycle":[{"event":"open","at":"2026-10-27T23:31:28Z"}],"visa":[],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.632,"p_room":1,"age_days":5,"expected_fill_days":48,"reasons":["conf:2","stale_co","velocity","win:early","comp:brand"],"computed_at":"2026-11-02T06:13:15Z"},"pay":null,"html_url":"https://alion.io/job/egis-group-senior-tunnel-ventilation-engineer-design","json_url":"https://alion.io/job/egis-group-senior-tunnel-ventilation-engineer-design.json","meta":{"generated_at":"2026-11-02T16:06:21Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":22424,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-03T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":3472},"rest":"https://alion.io/mcp/rest/get_company?id=3472"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fegis-group-senior-tunnel-ventilation-engineer-design"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fegis-group-senior-tunnel-ventilation-engineer-design"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fegis-group-senior-tunnel-ventilation-engineer-design"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/egis-group-senior-tunnel-ventilation-engineer-design\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fegis-group-senior-tunnel-ventilation-engineer-design"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3367116}},{"tool":"search_jobs","arguments":{"company":"egis-group.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3367116},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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